Copper Phosphorus Alloy Electrode is designed as a slender rod, optimized for arc welding and brazing processes. It can stably melt and fill the joints at high temperatures to ensure the firmness and durability of the connection. It is a rod-shaped electrode material made of high-purity copper and an appropriate amount of phosphorus alloy, with excellent conductivity and mechanical strength.
| BrazingAlloys | AWS | Chemical Composition（%） | Solidus | Liquidus | Main Uses | |||||||
| Ag | Cu | P | Zn | Sn | Other | F | ℃ | F | ℃ | |||
| BCu93P | BCuP-2 | / | 93 | 7 | / | / | / | 1310 | 710 | 1460 | 795 | Suitable for copper and copper alloy,with good fluidity. |
| BCu86P | / | / | 86 | 7 | / | 7 | / | 1134 | 657 | 1270 | 687 | Mainly used for brazing of hard alloy cutter |
| BCu91PAg | BCuP-6 | 2 | 91 | 7 | / | / | / | 1190 | 645 | 1450 | 785 | Mainly used for brazing ferrous metals, nickel-based alloys and Cu-Ni alloys; it has good fluidity. |
| BCu89PAg | BCuP-3 | 5 | 89 | 6 | / | / | / | 1190 | 645 | 1325 | 720 | |
| BCu88PAg | BCuP-4 | 6 | 86.7 | 7.3 | / | / | / | 1190 | 645 | 1275 | 690 | |
| BCu80PAg | BCuP-5 | 15 | 80 | 5 | / | / | / | 1190 | 645 | 1300 | 705 | |
| BCu75PAg | BCuP-6 | 18 | 75.5 | 6.5 | / | / | / | 1190 | 645 | 1190 | 645 | |
Copper Phosphorus Alloy Electrode is known for its excellent composition consistency. The precise control of chemical composition (BCuP-2 contains 93% Cu and 7% P) ensures the stable performance of each batch of products. The solidus temperature ranges from 645°C to 1310°C, and the liquidus temperature fluctuates very little between 645°C and 1460°C. Consistency is also reflected in its low impurity content (less than 1% of other elements), which reduces pores and defects in the welding process and has high repeatability of joint quality. BCuP-6 maintains uniform fluidity in the melting range of 645°C to 1450°C.
Copper Phosphorus Alloy Electrode's adaptability makes it perform well in a variety of welding environments. Its wide melting point range (BCuP-4 from 645°C to 1275°C) allows operation under different heat input conditions and adapts to manual and automated welding needs. Adaptability is also reflected in its compatibility with a variety of metals. The addition of silver content (BCuP-5 contains 15% Ag) enhances the welding effect on copper-nickel alloys and stainless steel. The flexibility of the rod supports the filling of complex geometries and reduces the workload of pretreatment, which is particularly suitable for overseas buyers with variable production lines.
Copper Phosphorus Alloy Electrode is known for its excellent durability. The joint is not easy to fail under high temperature and mechanical stress. The temperature difference between the solidus and liquidus (BCuP-3 from 645°C to 1325°C) ensures thermal cycle stability. Durability is also reflected in its corrosion resistance. The synergistic effect of phosphorus and silver enhances the oxidation resistance of the joint in humid and mildly acidic environments, and the service life can reach thousands of welding cycles. Especially in applications with long-term exposure, the durability significantly reduces maintenance costs, attracting international buyers with high requirements for equipment life, energy and infrastructure industries.
Copper Phosphorus Alloy Electrode performs well in the welding of copper joints in gas pipelines. The solidus of 710°C and the liquidus of 795°C match the thermal characteristics of copper pipes, and the joints have strong pressure resistance. Gazprom uses this product in its natural gas pipeline system to ensure the sealing and safety of the pipeline, and it is widely used in the Russian energy market.
In the welding of copper components in home appliance manufacturing, Copper Phosphorus Alloy Electrode is favored for its adaptability and consistency. BCuP-2 provides stable joints when melted at 710°C. Whirlpool uses this material in its home appliance production to ensure the reliability and durability of the product, which is particularly popular in the North American home appliance market.
Copper Phosphorus Alloy Electrode is widely used in the welding of copper pipes in chemical equipment, and its durability and adaptability are outstanding. BCuP-4 has excellent corrosion resistance when liquefied at 1275°C. BASF uses this product in its chemical plants to ensure the stability of pipelines in highly corrosive environments, which is particularly suitable for the European chemical industry.
Copper Phosphorus Alloy Electrode performs well in the welding of copper connectors in agricultural machinery, and its consistency and durability meet the requirements of high-intensity use. BCuP-6 has excellent vibration resistance when melted at 645°C. John Deere uses this material in its agricultural machinery manufacturing to ensure the long-term operating reliability of the equipment, which is particularly favored by the North American agricultural market.
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